JP3669298B2

JP3669298B2 - Washing machine

Info

Publication number: JP3669298B2
Application number: JP2001210442A
Authority: JP
Inventors: 純司神谷; 兼一赤坂; 己紀夫田原
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2001-07-11
Filing date: 2001-07-11
Publication date: 2005-07-06
Anticipated expiration: 2021-07-11
Also published as: CN1212441C; CN2584637Y; KR100521549B1; CN1396331A; KR20030007054A; TW587118B; JP2003019387A

Description

【０００１】
【発明の属する技術分野】
本発明は、衣類の洗い、すすぎ、脱水等を行う洗濯機に関するものである。
【０００２】
【従来の技術】
従来、この種の洗濯機は、図７に示すようになっていた。以下、その構成について説明する。
【０００３】
図７に示すように、洗濯機本体１は、内部に脱水振動を防振するように、サスペンション２によって懸架された水受け槽３を設け、水受け槽３内に洗濯兼脱水槽４を回転自在に配設し、この洗濯兼脱水槽４の内底部に洗濯物を撹拌する撹拌翼５を回転自在に配設している。洗濯兼脱水槽４は、水受け槽３の底部に設けた軸受６によって軸支されている脱水軸７と略同軸上となるように配設し、脱水軸７の上端部に固定され、撹拌翼５は、脱水軸７の中空部に脱水軸７と略同軸上となるように配設し脱水軸７の中空部内に設けた軸受８によって軸支した洗濯軸９の上端部に固定されている。また、洗濯軸９の下端部は減速機構１０の出力側に接続されている。また、下端部が駆動モータ１１のロータ１２につながる入力軸１３の上端部は減速機構１０の入力側に接続されている。
【０００４】
以下に、駆動モータ１１の回転の伝達を脱水軸７、入力軸１３のいずれかに切り換えるクラッチ機構について説明する。脱水軸７の下部にはその外周部にスプライン等の形状を有するスライド部１４を設けている。スライド部１４には、そのスプライン等の形状に対応した内周形状を有するスライド部材１５を設けている。駆動モータ１１の回転が脱水軸７への伝達時、すなわち洗濯兼脱水槽４回転時は、スライド部材１５を付勢バネ１６により下に押しつけ、スライド部材１５の下部に設けた下部突起部１５ａをロータ１２に設けたロータ突起部１２ａに係合させて、ロータ１２の回転を脱水軸７に伝達している。また、駆動モータ１１の回転が入力軸１３への伝達時、すなわち撹拌翼５回転時は、ギアードモータ又はソレノイドなどのレバー駆動手段１７によりスライド部材１５に係合するクラッチレバー１８を上方に移動させることで、スライド部材１５を上方に移動させ、スライド部材１５の下部突起部１５ａをロータ１２のロータ突起部１２ａから外すことでロータ１２の回転を脱水軸７に非伝達とし、入力軸１３のみに伝達している。入力軸１３に伝達された回転は、減速機構１０、洗濯軸９を介して撹拌翼５に伝達され、撹拌翼５を回転させる構成としている。同時にスライド部材１５の上部に設けた上部突起部１５ｂと駆動モータ１１のハウジング部１９に設けた固定側突起部１９ａを係合させることで、洗濯兼脱水槽４を固定し、撹拌翼５の回転の際、水流により発生する洗濯兼脱水槽４の共回りを防止している。
【０００５】
【発明が解決しようとする課題】
このような従来の構成では、駆動モータ１１の回転の伝達を脱水軸７から入力軸１３へ切り換える際、スライド部材１５の上部に設けた上部突起部１５ｂがロータ１２のロータ突起部１２ａにかみ合う時の衝突音や、脱水回転開始時や電磁ブレーキ時に下部突起部１５ａの側面１５ｄとロータ突起部１２ａの側面１２ｄが当接する衝突音等の異常音が発生するという問題を有していた。
【０００６】
本発明は上記従来の課題を解決するもので、洗濯への切り換え時や、洗濯運転時の衝突音等の異常音を減少させ低騒音化を実現することを目的としている。
【０００７】
【課題を解決するための手段】
上記従来の課題を解決するために、本発明の洗濯機は、上部に上部突起部を有し上下の滑動により駆動モータの回転の伝達を脱水軸、洗濯軸のいずれかに切り換えるスライド部材、前記脱水上部軸受と前記脱水下部軸受とを内包するケースとを備え、前記ケースへの取り付け部を設けた金属部材を内包するように前記スライド部材の上部突起部に係合する固定側突起部を樹脂成形した固定側係合部材を設け、前記固定側係合部材は前記金属部材にて前記保持部材を介して前記ケースに取り付ける構成としたものである。
【０００８】
これにより、洗濯への切り換え時や、洗濯運転時の衝突音等の異常音を減少させ低騒音化を実現することができる。
【０００９】
【発明の実施の形態】
請求項１に記載の発明は、洗濯兼脱水槽を回転させる中空の脱水軸と、前記脱水軸を軸支する脱水上部軸受と脱水下部軸受と、前記脱水軸と略同軸上に配設されるとともに前記洗濯兼脱水槽内に配設した撹拌翼を回転させる洗濯軸と、前記脱水軸と洗濯軸を回転させる駆動モータと、前記駆動モータを保持する保持部材と、上部に上部突起部を有し上下の滑動により前記駆動モータの回転の伝達を脱水軸、洗濯軸のいずれかに切り換えるスライド部材と、前記脱水上部軸受と前記脱水下部軸受とを内包するケースとを備え、前記ケースへの取り付け部を設けた金属部材を内包するように前記スライド部材の上部突起部に係合する固定側突起部を樹脂成形した固定側係合部材を設け、前記固定側係合部材は前記金属部材にて前記保持部材を介して前記ケースに取り付ける構成としたものであり、強度を確保するとともに、洗濯への切り換え時の衝突音や、洗濯運転時における撹拌翼の反転時の衝突音を大幅に減少させることができる。
【００１０】
請求項２に記載の発明は、請求項１に記載の発明において、固定側係合部材の下部には第１の略円筒状リブを設け、固定側突起部は前記第１の略円筒状リブから外方向に放射状に延設し、スライド部材には上部突起部が前記放射状の固定側突起部に係合するように放射状に設けられ、前記放射状の上部突起部の外周には前記放射状の上部突起部に一体に第２の略円筒状リブを設けたものであり、洗濯への切り換え時の衝突音や、洗濯運転時における撹拌翼の反転時の衝突音を大幅に減少させることができるとともに、かみ合い用のそれぞれの突起部の強度向上を図ることができる。
【００１１】
請求項３に記載の発明は、請求項１又は２に記載の発明において、回転によりスライド部材を上下に滑動させるクラッチレバーと、前記クラッチレバーを回転動作させるレバー駆動手段とを備え、固定側係合部材には、前記クラッチレバーの軸部を回転自在に支持する回転保持部が一体に設けられたものであり、洗濯への切り換え時の衝突音や、洗濯運転時における撹拌翼の反転時の衝突音を大幅に減少させることができ、かみ合い用のそれぞれの突起部の強度向上を図ることができるとともに、部品点数の低減を図り組立性を向上することができる。
【００１２】
【実施例】
以下本発明の実施例について、図面を参照しながら説明する。
【００１３】
（実施例１）
図１は本発明の第１の実施例の洗濯機の全体構成を示す図であり、図２、３は本実施例の洗濯機の駆動部構成を示す図である。
【００１４】
図１において、洗濯機本体２０は、内部に脱水振動を防振するように、サスペンション２１によって懸架された水受け槽２２を設け、水受け槽２２内に洗濯兼脱水槽２３を回転自在に配設し、この洗濯兼脱水槽２３の内底部に洗濯物を撹拌する撹拌翼２４を回転自在に配設している。水受け槽２２の底部には駆動部２５を設けている。
【００１５】
図１および図２において、駆動部２５には、中空の脱水軸２６を設け、脱水軸２６は、駆動部２５の上方中央部に設けた脱水上部軸受２７と中間中央部近傍に設けた脱水下部軸受２８により軸支されている。脱水軸２６の上端側は、洗濯兼脱水槽２３の底部に固定され、洗濯兼脱水槽２３と連結している。脱水軸２６の上部側中空部２６ａには、脱水軸２６と略同軸上となるように洗濯軸２９を設け、脱水軸２６の上部側中空部２６ａ内に設けた洗濯軸受３０により軸支されている。洗濯軸２９の上端側は、撹拌翼２４の底部に固定され、撹拌翼２４と連結している。一方、洗濯軸２９の下端側は、脱水軸２６内の中間中空部２６ｂに設けた減速機構３１の出力側に連結している。
【００１６】
減速機構３１の入力側には、入力軸３２の上端を接続し、入力軸３２は、脱水軸２６の下部側中空部２６ｃ内に設けた入力軸受３３により軸支されている。
【００１７】
洗濯軸２９、入力軸３２および減速機構３１等を内包する脱水軸２６、および脱水上部軸受２７と脱水下部軸受２８はケース３４により内包され、このケース３４は水受け槽２２の底部に固定されている。
【００１８】
３５は脱水軸２７および入力軸３２を回転させる駆動モータであり、入力軸３２の下部に駆動モータ３５のロータ３５ａが連結されている。駆動モータ３５内にはロータ３５ａの外周に設けた磁石３５ｂと対峙するように、ステータ３５ｃが配されている。
【００１９】
脱水軸２７の下部にはその外周部にスプライン等の形状を有する樹脂製のスライド部３６を設けている。スライド部３６には、そのスプライン等の形状に対応した内周形状を有するスライド部材３７を上下摺動自在に設けている。そのスライド部材３７は、付勢バネ３８により下方向に押しつけられ、スライド部材３７の下部に設けた下部突起部３７ａをロータ３５ａに設けた開口部３５ｄに係合させて、ロータ３５ａの回転を脱水軸２７に伝達できるよう構成している。なお、洗濯機の電源がＯＦＦ時には、この状態を維持するものである。
【００２０】
水受け槽２２の底部には、ギアードモータ又はソレノイドなどのレバー駆動手段３９が取り付けられている。
【００２１】
レバー駆動手段３９の駆動手段接続部３９ａには、他端をクラッチレバー４０のクラッチレバー接続部４０ａに接続した媒介部材４１の一端を接続している。
【００２２】
クラッチレバー４０は、一端にスライド部材３７を下方から支持する略Ｕ字形状のスライド部材支持部４０ｂを有し、他端には前記のクラッチレバー接続部４０ａを有し、かつ、駆動モータ３５のステータ３５ｃを保持する保持部材４２に設けた固定側係合部材４３の回転保持部４３ａに、回転自在に支持される軸部４０ｃを有している。
【００２３】
固定側係合部材４３の保持部材４２への取り付けは、ねじ４４により、固定側係合部材４３と保持部材４２を一体にケース３４に固定している。
【００２４】
固定側係合部材４３は、金属部材４３ｂを底部に穴部を有するように略凹状にプレス加工し、その外側略平面部を保持部材４２へ取り付け部とし、金属部材４３ｂを内包するように樹脂成形にて固定側突起部４３ｃを形成している。
【００２５】
駆動モータ３５の回転が入力軸３２への伝達時には、レバー駆動手段３９の駆動手段接続部３９ａを回転させ、図２の位置から図３の位置に移動させることにより、クラッチレバー４０は、媒介部材４１を介して、軸部４０ｃを中心に時計方向に回転する。この回転により、スライド部材支持部４０ｂが上方向に回転移動し、付勢バネ３８の下方向への付勢力に抗して、スライド部材３７を上方向に持ち上げる。これにより、図３に示すようにスライド部材３７の下部に設けた下部突起部３７ａは、ロータ３５ａに設けた開口部３５ｄとの係合から外れ、ロータ３５ａの回転は、脱水軸２７には非伝達となり、入力軸３２にのみ伝達させるよう構成している。それと同時にスライド部材３７の上部に設けた上部突起部３７ｂと、固定側係合部材４３に設けた固定側突起部４３ｃが係合することにより、脱水軸２６を固定し、洗濯兼脱水槽２３の共回りを防止する構成としている。
【００２６】
なお、クラッチレバー接続部４０ａは、駆動モータ３５から外方へ突出しており、図２に示すようにクラッチレバー４０が反時計方向に回転すると、ケース３４の側壁に当接し、その位置で回転が規制される。
【００２７】
クラッチレバー４０は、一端にスライド部材３７を下方から支持する略Ｕ字形状のスライド部材支持部４０ｂを有し、他端には前記のクラッチレバー接続部４０ａを有し、かつ、駆動モータ３５のステータ３５ｃを保持する保持部材４２に設けた固定側係合部材４３の穴部４３ａに、回転自在に支持される軸部４０ｃを有している。
【００２８】
図４に示すように、金属部材４３ｂを内包する樹脂成形にて形成された固定側突起部４３ｃの内径方向部には、第１の略円筒状リブ４３ｄを設け、固定側突起部４３ｃは第１の略円筒状リブ４３ｄから外方向に放射線状に延設している。４３ｅは、保持部材４２への取り付けの際の貫通穴である。
【００２９】
図５に示すように、スライド部材３７の上部に設けた上部突起部３７ｂは、固定側突起部４３ｃと係合するように放射線状に設けられている。上部突起部３７ｂの外周には、その上部突起部３７ｂに一体に第２の略円筒状リブ３７ｃを設けている。
【００３０】
このような構成において、動作について説明する。
【００３１】
まず、撹拌翼２４の回転による洗濯、すすぎの行程を実行する場合、すなわち駆動モータ３５の回転が入力軸３２への伝達時には、レバー駆動手段３９の駆動手段接続部３９ａを回転させ、図２の位置から図３の位置に移動させることにより、クラッチレバー４０は、媒介部材４１を介して、軸部４０ｃを中心に時計方向に回転する。この回転により、スライド部材支持部４０ｂが上方向に回転移動し、付勢バネ３８の下方向への付勢力に抗して、スライド部材３７を上方向に持ち上げる。これにより、図３に示すようにスライド部材３７の下部に設けた下部突起部３７ａは、ロータ３５ａに設けた開口部３５ｄとの係合から外れ、ロータ３５ａの回転は、脱水軸２７には非伝達となり、入力軸３２にのみ伝達され、撹拌翼２４が回転する。それと同時にスライド部材３７の上部に設けた上部突起部３７ｂと、固定側係合部材４３に設けた固定側突起部４３ｃが係合し、洗濯兼脱水槽２３の共回りを防止する。
【００３２】
以上のように、固定側係合部材４３は、金属部材４３ｂを内包するように樹脂成形にて固定側突起部４３ｃを形成しているので、金属部材４３ｂにて強度を確保するとともに、樹脂製のスライド部材３７の上部に設けた上部突起部３７ｂと、固定側係合部材４３に設けた樹脂製の固定側突起部４３ｃが係合する際の衝突音や、洗濯時の撹拌翼の反転の際の衝突音は、樹脂同士の衝突であるため、金属の場合と比べ、大幅に低減することができる。
【００３３】
また、固定側突起部４３ｃには第１の略円筒状リブ４３ｄを、上部突起部３７ｂには第２の略円筒状リブ３７ｃをそれぞれ一体に設けているため、それぞれの突起部の強度を向上させることができ、信頼性の向上を図ることができる。
【００３４】
さらに、クラッチレバー４０の軸部４０ｃを支持する回転保持部４３ａを固定側係合部材４３と一体に設けているので、部品点数の低減を図り組立性を向上することができる。
【００３５】
（実施例２）
つぎに、第２の実施例を図６を参照しながら説明する。なお、上記第１の実施例と同じ構成のものは同一符号を付して説明を省略する。
【００３６】
図６において、駆動モータ３５のステータ３５ｃを保持する保持部材４５には、スライド部材３７の上部に放射線状に設けた上部突起部３７ｂと係合するように、放射線状に固定側突起部４５ａが一体に設けられている。固定側突起部４５ａの内径方向部には、第３の略円筒状リブ４５ｂが、固定側突起部４５ａと一体に設けられている。
【００３７】
また、保持部材４５に一体に設けた固定側突起部４５ａの近傍内部には、補強材４６が内包されている。
【００３８】
クラッチレバー４０は、一端にスライド部材３７を下方から支持する略Ｕ字形状のスライド部材支持部４０ｂを有し、他端には前記のクラッチレバー接続部４０ａを有し、かつ、駆動モータ３５のステータ３５ｃを保持する保持部材４５に一体に設けた回転保持部４５ｃに、回転自在に支持される軸部４０ｃを有している。
【００３９】
以上の構成により、樹脂製のスライド部材３７の上部に設けた上部突起部３７ｂと、保持部材４５に一体に設けた固定側突起部４５ａが係合する際の衝突音や、洗濯時の撹拌翼の反転の際の衝突音は、樹脂同士の衝突であるため、金属の場合と比べ、大幅に低減することができる。また、固定側突起部４５ａを保持部材４５に一体に設けているので、固定側突起部を有する固定側係合部材を別部品として設ける必要がないため、部品点数の低減を図り組立性を向上することができる。
【００４０】
また、保持部材４５に一体に設けた固定側突起部４５ａの近傍内部には、補強材４６が内包されているため、固定側突起部４５ａの強度を向上させることができ、信頼性の向上を図ることができる。
【００４１】
さらに、クラッチレバー４０の軸部４０ｃを支持する回転保持部４５ｃを保持部材４５と一体に設けているので、部品点数の低減を図り組立性を向上することができる。
【００４２】
【発明の効果】
以上のように、請求項１に記載の発明によれば、洗濯兼脱水槽を回転させる中空の脱水軸と、前記脱水軸を軸支する脱水上部軸受と脱水下部軸受と、前記脱水軸と略同軸上に配設されるとともに前記洗濯兼脱水槽内に配設した撹拌翼を回転させる洗濯軸と、前記脱水軸と洗濯軸を回転させる駆動モータと、前記駆動モータを保持する保持部材と、上部に上部突起部を有し上下の滑動により前記駆動モータの回転の伝達を脱水軸、洗濯軸のいずれかに切り換えるスライド部材と、前記脱水上部軸受と前記脱水下部軸受とを内包するケースとを備え、前記ケースへの取り付け部を設けた金属部材を内包するように前記スライド部材の上部突起部に係合する固定側突起部を樹脂成形した固定側係合部材を設け、前記固定側係合部材は前記金属部材にて前記保持部材を介して前記ケースに取り付ける構成としたから、強度を確保するとともに、洗濯への切り換え時の衝突音や、洗濯運転時における撹拌翼の反転時の衝突音を大幅に減少させることができ、品質の向上を実現できるものである。
【００４３】
また、請求項２に記載の発明によれば、請求項１に記載の発明において、固定側係合部材の下部には第１の略円筒状リブを設け、固定側突起部は前記第１の略円筒状リブから外方向に放射状に延設し、スライド部材には上部突起部が前記放射状の固定側突起部に係合するように放射状に設けられ、前記放射状の上部突起部の外周には前記放射状の上部突起部に一体に第２の略円筒状リブを設けたから、洗濯への切り換え時の衝突音や、洗濯運転時における撹拌翼の反転時の衝突音を大幅に減少させることができるとともに、かみ合い用のそれぞれの突起部の強度向上を図ることができ、信頼性、品質の向上を実現できるものである。
【００４４】
また、請求項３に記載の発明によれば、請求項１又は２に記載の発明において、回転によりスライド部材を上下に滑動させるクラッチレバーと、前記クラッチレバーを回転動作させるレバー駆動手段とを備え、固定側係合部材には、前記クラッチレバーの軸部を回転自在に支持する回転保持部が一体に設けられたから、洗濯への切り換え時の衝突音や、洗濯運転時における撹拌翼の反転時の衝突音を大幅に減少させることができ、かみ合い用のそれぞれの突起部の強度向上を図り、信頼性、品質の向上を実現できることができるとともに、部品点数の低減を図り組立性を向上することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施例における洗濯機の断面図
【図２】本発明の第１の実施例における洗濯機の要部断面図
【図３】本発明の第１の実施例における洗濯機の要部断面図
【図４】（ａ）本発明の第１の実施例における洗濯機の要部断面図
（ｂ）本発明の第１の実施例における洗濯機の要部底面図
【図５】（ａ）本発明の第１の実施例における洗濯機の要部平面図
（ｂ）本発明の第１の実施例における洗濯機の要部断面図
【図６】本発明の第２の実施例における洗濯機の要部断面図
【図７】従来の洗濯機の断面図
【符号の説明】
２３洗濯兼脱水槽
２４撹拌翼
２６脱水軸
２９洗濯軸
３５駆動モータ
３７スライド部材
３７ｂ上部突起部
４２保持部材
４３固定側係合部材
４３ｂ金属部材（補強部材）
４３ｃ固定側突起部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine that performs washing, rinsing, dehydration, and the like of clothes.
[0002]
[Prior art]
Conventionally, this type of washing machine has been configured as shown in FIG. Hereinafter, the configuration will be described.
[0003]
As shown in FIG. 7, the washing machine main body 1 is provided with a water receiving tub 3 suspended by a suspension 2 so as to prevent dehydration vibration, and the washing / dehydrating tub 4 is rotated in the water receiving tub 3. An agitating blade 5 for agitating the laundry is rotatably disposed at the inner bottom of the washing / dehydrating tub 4. The washing and dewatering tub 4 is arranged so as to be substantially coaxial with the dewatering shaft 7 supported by a bearing 6 provided at the bottom of the water receiving tub 3, and is fixed to the upper end of the dewatering shaft 7 for stirring. The wing 5 is fixed to the upper end portion of the washing shaft 9 which is disposed in the hollow portion of the dewatering shaft 7 so as to be substantially coaxial with the dewatering shaft 7 and is supported by a bearing 8 provided in the hollow portion of the dewatering shaft 7. Yes. The lower end of the washing shaft 9 is connected to the output side of the speed reduction mechanism 10. Further, the upper end portion of the input shaft 13 whose lower end portion is connected to the rotor 12 of the drive motor 11 is connected to the input side of the speed reduction mechanism 10.
[0004]
Hereinafter, a clutch mechanism that switches transmission of rotation of the drive motor 11 to either the dehydrating shaft 7 or the input shaft 13 will be described. A slide part 14 having a shape such as a spline is provided on the outer periphery of the lower part of the dewatering shaft 7. The slide portion 14 is provided with a slide member 15 having an inner peripheral shape corresponding to the shape of the spline or the like. When the rotation of the drive motor 11 is transmitted to the dehydrating shaft 7, that is, when the washing and dehydrating tub 4 rotates, the slide member 15 is pressed downward by the biasing spring 16 and the lower protrusion 15a provided at the lower portion of the slide member 15 is moved. The rotation of the rotor 12 is transmitted to the dehydrating shaft 7 by being engaged with a rotor protrusion 12 a provided on the rotor 12. When the rotation of the drive motor 11 is transmitted to the input shaft 13, that is, when the stirring blade 5 rotates, the clutch lever 18 engaged with the slide member 15 is moved upward by lever drive means 17 such as a geared motor or solenoid. Thus, the slide member 15 is moved upward, and the lower projection 15a of the slide member 15 is removed from the rotor projection 12a of the rotor 12, so that the rotation of the rotor 12 is not transmitted to the dehydrating shaft 7, and only the input shaft 13 is transmitted. Communicating. The rotation transmitted to the input shaft 13 is transmitted to the stirring blade 5 via the speed reduction mechanism 10 and the washing shaft 9 to rotate the stirring blade 5. At the same time, the washing / dehydrating tub 4 is fixed and the stirring blade 5 is rotated by engaging the upper protrusion 15b provided on the upper portion of the slide member 15 with the fixed protrusion 19a provided on the housing 19 of the drive motor 11. In this case, the co-rotation of the washing and dewatering tub 4 caused by the water flow is prevented.
[0005]
[Problems to be solved by the invention]
In such a conventional configuration, when the transmission of the rotation of the drive motor 11 is switched from the dehydrating shaft 7 to the input shaft 13, the upper protrusion 15b provided on the upper portion of the slide member 15 is engaged with the rotor protrusion 12a of the rotor 12. There is a problem that an abnormal noise such as a collision sound generated when the side surface 15d of the lower projection 15a and the side surface 12d of the rotor projection 12a abut at the time of start of dehydration rotation or electromagnetic braking is generated.
[0006]
SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to reduce noise by reducing abnormal sounds such as a collision sound during switching to washing or washing operation.
[0007]
[Means for Solving the Problems]
In order to solve the above-described conventional problems, the washing machine of the present invention has an upper protrusion on the upper part, and a sliding member that switches transmission of rotation of the drive motor to either the dehydrating shaft or the washing shaft by sliding up and down , And a case that encloses the dewatering upper bearing and the dewatering lower bearing, and a fixed-side protrusion that engages with the upper protrusion of the slide member so as to enclose a metal member provided with an attachment to the case. A molded fixed engagement member is provided, and the fixed engagement member is attached to the case by the metal member via the holding member .
[0008]
As a result, abnormal noise such as collision noise during switching to washing or during washing operation can be reduced to achieve low noise.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, a hollow dewatering shaft for rotating the washing and dewatering tub, a dewatering upper bearing and a dewatering lower bearing that support the dewatering shaft, and the dewatering shaft are arranged substantially coaxially. And a washing shaft for rotating a stirring blade disposed in the washing and dewatering tub, a drive motor for rotating the dewatering shaft and the washing shaft, a holding member for holding the drive motor, and an upper protrusion on the upper side. And a slide member that switches transmission of rotation of the drive motor to either a dewatering shaft or a washing shaft by sliding up and down, and a case that includes the dewatering upper bearing and the dewatering lower bearing, and is attached to the case A fixed-side engaging member formed by resin-molding a fixed-side protruding portion that engages with the upper protruding portion of the slide member so as to enclose the metal member provided with the portion, and the fixed-side engaging member is formed of the metal member. Through the holding member Wherein is obtained by a structure for mounting the case, while securing the strength, the or collision sound when switching to laundering, the collision noise at the time of reversal of the stirring blade at the time of the washing operation can be considerably reduced.
[0010]
According to a second aspect of the present invention, in the first aspect of the present invention, the first substantially cylindrical rib is provided at a lower portion of the fixed side engaging member, and the fixed side protrusion is the first generally cylindrical rib. Extending radially outward from the slide member, and a radial projection is provided on the slide member so that the upper projection engages with the radial fixed projection, and the radial upper projection is disposed on the outer periphery of the radial upper projection. The projecting portion is provided with a second substantially cylindrical rib, which can greatly reduce the impact sound when switching to washing and the impact sound when the agitating blade is reversed during washing operation. Further, the strength of each protrusion for meshing can be improved.
[0011]
The invention of claim 3 is the invention according to claim 1 or 2, comprising a clutch lever for sliding the slide member up and down by rotation, a lever driving means for rotating operating the clutch lever, the fixed-side engagement The joint member is integrally provided with a rotation holding portion that rotatably supports the shaft portion of the clutch lever, and a collision sound at the time of switching to washing and a reversal of the stirring blade during washing operation. The impact noise can be greatly reduced, the strength of the respective projections for meshing can be improved, and the number of parts can be reduced to improve the assemblability.
[0012]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0013]
(Example 1)
FIG. 1 is a diagram showing an overall configuration of a washing machine according to a first embodiment of the present invention, and FIGS. 2 and 3 are diagrams showing a drive unit configuration of the washing machine according to the present embodiment.
[0014]
In FIG. 1, a washing machine main body 20 is provided with a water receiving tub 22 suspended by a suspension 21 so as to prevent dehydration vibration inside, and a washing / dehydrating tub 23 is rotatably arranged in the water receiving tub 22. The agitating blade 24 for agitating the laundry is rotatably disposed at the inner bottom of the washing / dehydrating tub 23. A drive unit 25 is provided at the bottom of the water receiving tank 22.
[0015]
1 and 2, the drive unit 25 is provided with a hollow dewatering shaft 26, and the dewatering shaft 26 includes a dewatering upper bearing 27 provided in the upper center portion of the driving unit 25 and a dewatering lower portion provided in the vicinity of the middle center portion. It is supported by a bearing 28. The upper end side of the dewatering shaft 26 is fixed to the bottom of the washing and dewatering tub 23 and connected to the washing and dewatering tub 23. A washing shaft 29 is provided in the upper hollow portion 26a of the dewatering shaft 26 so as to be substantially coaxial with the dewatering shaft 26, and is supported by a washing bearing 30 provided in the upper hollow portion 26a of the dewatering shaft 26. Yes. The upper end side of the washing shaft 29 is fixed to the bottom of the stirring blade 24 and is connected to the stirring blade 24. On the other hand, the lower end side of the washing shaft 29 is connected to the output side of the speed reduction mechanism 31 provided in the intermediate hollow portion 26 b in the dewatering shaft 26.
[0016]
An upper end of the input shaft 32 is connected to the input side of the speed reduction mechanism 31, and the input shaft 32 is pivotally supported by an input bearing 33 provided in the lower hollow portion 26 c of the dewatering shaft 26.
[0017]
A dewatering shaft 26 including a washing shaft 29, an input shaft 32, a speed reduction mechanism 31, and the like, and a dewatering upper bearing 27 and a dewatering lower bearing 28 are included in a case 34. The case 34 is fixed to the bottom of the water receiving tub 22. Yes.
[0018]
A drive motor 35 rotates the dehydrating shaft 27 and the input shaft 32, and a rotor 35 a of the drive motor 35 is connected to the lower portion of the input shaft 32. A stator 35c is arranged in the drive motor 35 so as to face a magnet 35b provided on the outer periphery of the rotor 35a.
[0019]
A resin slide portion 36 having a shape such as a spline is provided on the outer periphery of the lower portion of the dewatering shaft 27. The slide portion 36 is provided with a slide member 37 having an inner peripheral shape corresponding to the shape of the spline or the like so as to be slidable up and down. The slide member 37 is pressed downward by the urging spring 38, and the lower projection 37a provided at the lower part of the slide member 37 is engaged with the opening 35d provided in the rotor 35a, so that the rotation of the rotor 35a is dehydrated. The shaft 27 can be transmitted. This state is maintained when the washing machine is turned off.
[0020]
A lever driving means 39 such as a geared motor or a solenoid is attached to the bottom of the water receiving tank 22.
[0021]
One end of a mediating member 41 having the other end connected to the clutch lever connecting portion 40 a of the clutch lever 40 is connected to the driving means connecting portion 39 a of the lever driving means 39.
[0022]
The clutch lever 40 has a substantially U-shaped slide member support portion 40 b that supports the slide member 37 from below at one end, the clutch lever connection portion 40 a at the other end, and the drive motor 35. The rotation holding portion 43a of the fixed engagement member 43 provided on the holding member 42 that holds the stator 35c has a shaft portion 40c that is rotatably supported.
[0023]
The fixed-side engagement member 43 is attached to the holding member 42 by fixing the fixed-side engagement member 43 and the holding member 42 to the case 34 with a screw 44.
[0024]
The fixed-side engaging member 43 is a resin that presses the metal member 43b into a substantially concave shape so as to have a hole at the bottom, uses the substantially flat outer portion as an attachment portion to the holding member 42, and encloses the metal member 43b. The fixed side protrusion 43c is formed by molding.
[0025]
When the rotation of the drive motor 35 is transmitted to the input shaft 32, the clutch lever 40 is moved from the position of FIG. 2 to the position of FIG. 3 by rotating the drive means connecting portion 39 a of the lever drive means 39. Rotate clockwise about the shaft 40c via 41. This rotation causes the slide member support portion 40b to rotate upward, and lifts the slide member 37 upward against the downward biasing force of the biasing spring 38. As a result, as shown in FIG. 3, the lower protrusion 37a provided at the lower portion of the slide member 37 is disengaged from the opening 35d provided in the rotor 35a, and the rotation of the rotor 35a is not applied to the dehydrating shaft 27. It is configured to transmit only to the input shaft 32. At the same time, the upper protrusion 37b provided on the upper portion of the slide member 37 and the fixed side protrusion 43c provided on the fixed engagement member 43 are engaged, thereby fixing the dehydrating shaft 26 and the washing / dehydrating tub 23. It is configured to prevent co-rotation.
[0026]
The clutch lever connecting portion 40a protrudes outward from the drive motor 35. When the clutch lever 40 rotates counterclockwise as shown in FIG. 2, it contacts the side wall of the case 34 and rotates at that position. Be regulated.
[0027]
The clutch lever 40 has a substantially U-shaped slide member support portion 40 b that supports the slide member 37 from below at one end, the clutch lever connection portion 40 a at the other end, and the drive motor 35. A shaft portion 40c that is rotatably supported is provided in a hole portion 43a of a fixed-side engagement member 43 provided on a holding member 42 that holds the stator 35c.
[0028]
As shown in FIG. 4, a first substantially cylindrical rib 43d is provided on the inner diameter direction portion of the fixed-side protrusion 43c formed by resin molding including the metal member 43b, and the fixed-side protrusion 43c One substantially cylindrical rib 43d extends radially outwardly. 43 e is a through hole when attached to the holding member 42.
[0029]
As shown in FIG. 5, the upper protrusions 37b provided on the upper part of the slide member 37 are provided in a radial pattern so as to engage with the fixed-side protrusions 43c. On the outer periphery of the upper protrusion 37b, a second substantially cylindrical rib 37c is provided integrally with the upper protrusion 37b.
[0030]
The operation in such a configuration will be described.
[0031]
First, when performing a washing and rinsing process by the rotation of the stirring blade 24, that is, when the rotation of the driving motor 35 is transmitted to the input shaft 32, the driving means connecting portion 39a of the lever driving means 39 is rotated, as shown in FIG. By moving from the position to the position of FIG. 3, the clutch lever 40 rotates clockwise around the shaft portion 40 c via the mediating member 41. This rotation causes the slide member support portion 40b to rotate upward, and lifts the slide member 37 upward against the downward biasing force of the biasing spring 38. As a result, as shown in FIG. 3, the lower protrusion 37a provided at the lower portion of the slide member 37 is disengaged from the opening 35d provided in the rotor 35a, and the rotation of the rotor 35a is not applied to the dehydrating shaft 27. Transmission is transmitted only to the input shaft 32, and the stirring blade 24 rotates. At the same time, the upper protrusion 37 b provided on the upper portion of the slide member 37 and the fixed protrusion 43 c provided on the fixed engagement member 43 are engaged to prevent the washing and dewatering tub 23 from rotating together.
[0032]
As described above, the fixed-side engaging member 43 is formed with the fixed-side protrusion 43c by resin molding so as to enclose the metal member 43b, so that the metal member 43b ensures strength and is made of resin. Of the upper projecting portion 37b provided on the upper side of the slide member 37 and the resin-made fixed side projecting portion 43c provided on the fixed side engaging member 43 are engaged, and the stirring blades are reversed during washing. Since the collision noise at the time is a collision between resins, it can be greatly reduced as compared with the case of metal.
[0033]
Further, since the first substantially cylindrical rib 43d and the second substantially cylindrical rib 37c are integrally provided on the fixed-side protrusion 43c and the upper protrusion 37b, the strength of each protrusion is improved. The reliability can be improved.
[0034]
Further, since the rotation holding portion 43a that supports the shaft portion 40c of the clutch lever 40 is provided integrally with the fixed side engaging member 43, the number of parts can be reduced and the assemblability can be improved.
[0035]
(Example 2)
Next, a second embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
[0036]
In FIG. 6, the holding member 45 that holds the stator 35 c of the drive motor 35 has radially fixed-side protrusions 45 a so as to engage with the upper protrusions 37 b provided radially on the slide member 37. It is provided integrally. A third substantially cylindrical rib 45b is provided integrally with the fixed-side protrusion 45a at the inner diameter direction portion of the fixed-side protrusion 45a.
[0037]
In addition, a reinforcing member 46 is included in the vicinity of the fixed-side protruding portion 45 a provided integrally with the holding member 45.
[0038]
The clutch lever 40 has a substantially U-shaped slide member support portion 40 b that supports the slide member 37 from below at one end, the clutch lever connection portion 40 a at the other end, and the drive motor 35. A rotation holding portion 45c provided integrally with the holding member 45 that holds the stator 35c has a shaft portion 40c that is rotatably supported.
[0039]
With the above configuration, a collision sound generated when the upper protrusion 37b provided on the resin slide member 37 and the fixed protrusion 45a provided integrally with the holding member 45 are engaged, or a stirring blade during washing. Since the collision sound at the time of reversal is a collision between resins, it can be greatly reduced compared to the case of metal. In addition, since the fixed-side protrusion 45a is provided integrally with the holding member 45, there is no need to provide a fixed-side engaging member having the fixed-side protrusion as a separate part, so the number of parts is reduced and assembly is improved. can do.
[0040]
Further, since the reinforcing member 46 is included in the vicinity of the fixed side protrusion 45a provided integrally with the holding member 45, the strength of the fixed side protrusion 45a can be improved, and the reliability can be improved. Can be planned.
[0041]
Furthermore, since the rotation holding portion 45c that supports the shaft portion 40c of the clutch lever 40 is provided integrally with the holding member 45, the number of parts can be reduced and the assemblability can be improved.
[0042]
【The invention's effect】
As described above, according to the first aspect of the present invention, the hollow dewatering shaft that rotates the washing and dewatering tub, the dewatering upper bearing and the dewatering lower bearing that support the dewatering shaft, and the dewatering shaft are substantially the same. A washing shaft that is coaxially disposed and rotates a stirring blade disposed in the washing and dewatering tub, a drive motor that rotates the dewatering shaft and the washing shaft, and a holding member that holds the drive motor; A slide member that has an upper protrusion on the upper part and switches the transmission of rotation of the drive motor to either a dewatering shaft or a washing shaft by sliding up and down, and a case that includes the dewatering upper bearing and the dewatering lower bearing A fixed-side engaging member formed by resin-molding a fixed-side protruding portion that engages with an upper protruding portion of the slide member so as to enclose a metal member provided with a mounting portion to the case. member to the metal member Because was configured to be attached to the casing via the holding member, while securing the strength, the or collision sound when switching to laundering, can greatly reduce the impact noise at the time of reversal of the stirring blade during the washing operation It is possible to improve quality.
[0043]
According to the invention described in claim 2, in the invention described in claim 1, the first substantially cylindrical rib is provided in the lower part of the fixed side engaging member, and the fixed side protrusion is the first It extends radially outward from the substantially cylindrical rib, and the slide member is provided with an upper projection radially so as to engage with the radial fixed projection, and on the outer periphery of the radial upper projection Since the second substantially cylindrical rib is integrally provided on the radial upper projection, the collision noise when switching to washing and the collision noise when reversing the stirring blade during washing operation can be greatly reduced. At the same time, the strength of each projection for meshing can be improved, and reliability and quality can be improved.
[0044]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the clutch lever for sliding the slide member up and down by rotation and the lever driving means for rotating the clutch lever are provided. The fixed engagement member is integrally provided with a rotation holding portion that rotatably supports the shaft portion of the clutch lever , so that a collision sound when switching to washing and a reversal of the stirring blade during washing operation are provided. Collision noise can be greatly reduced, the strength of each projection for meshing can be improved, reliability and quality can be improved, and the number of parts can be reduced to improve assembly. be able to.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a washing machine according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of a main part of the washing machine according to the first embodiment of the present invention. [FIG. 4] (a) Cross-sectional view of the main part of the washing machine in the first embodiment of the present invention (b) Bottom view of the main part of the washing machine in the first embodiment of the present invention. 5A is a plan view of the main part of the washing machine according to the first embodiment of the present invention. FIG. 5B is a sectional view of the main part of the washing machine according to the first embodiment of the present invention. Sectional view of the main part of the washing machine in Example 2 [FIG. 7] Cross-sectional view of the conventional washing machine [Explanation of symbols]
DESCRIPTION OF SYMBOLS 23 Washing / dehydrating tank 24 Stirring blade 26 Dehydrating shaft 29 Washing shaft 35 Drive motor 37 Slide member 37b Upper protrusion 42 Holding member 43 Fixed side engaging member 43b Metal member (reinforcing member)
43c Fixed side protrusion

Claims

A hollow dewatering shaft for rotating the washing / dehydrating tub, a dehydrating upper bearing and a dehydrating lower bearing for supporting the dewatering shaft, and substantially coaxial with the dewatering shaft and disposed in the washing / dehydrating tub. A washing shaft for rotating the agitating blade, a drive motor for rotating the dewatering shaft and the washing shaft, a holding member for holding the drive motor, an upper protrusion on the upper portion, and a vertical sliding movement of the drive motor. A slide member that switches rotation transmission to either a dewatering shaft or a washing shaft, and a case that encloses the dewatering upper bearing and the dewatering lower bearing, and includes a metal member provided with an attachment portion to the case. A fixed-side engaging member formed by resin-molding a fixed-side protruding portion that engages with the upper protruding portion of the slide member, and the fixed-side engaging member is attached to the case by the metal member via the holding member Attach Formed and the washing machine.

A first substantially cylindrical rib is provided at the lower portion of the fixed engagement member, the fixed protrusion extends radially outward from the first substantially cylindrical rib, and the upper protrusion is formed on the slide member. 2. A radial rib is provided so as to engage with the radial fixed protrusion, and a second substantially cylindrical rib is integrally provided on the outer periphery of the radial upper protrusion with the radial upper protrusion. The washing machine as described in.

A rotation holding portion that includes a clutch lever that slides the slide member up and down by rotation and a lever driving unit that rotates the clutch lever, and the fixed engagement member rotatably supports the shaft portion of the clutch lever. The washing machine according to claim 1 or 2, wherein is integrally provided .